JPS6343625Y2 - - Google Patents
Info
- Publication number
- JPS6343625Y2 JPS6343625Y2 JP1979076765U JP7676579U JPS6343625Y2 JP S6343625 Y2 JPS6343625 Y2 JP S6343625Y2 JP 1979076765 U JP1979076765 U JP 1979076765U JP 7676579 U JP7676579 U JP 7676579U JP S6343625 Y2 JPS6343625 Y2 JP S6343625Y2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- polarity
- rectangular wave
- positive
- output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000001514 detection method Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 4
- 230000005236 sound signal Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/14—Digital recording or reproducing using self-clocking codes
- G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
- G11B20/1407—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol
- G11B20/1419—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol to or from biphase level coding, i.e. to or from codes where a one is coded as a transition from a high to a low level during the middle of a bit cell and a zero is encoded as a transition from a low to a high level during the middle of a bit cell or vice versa, e.g. split phase code, Manchester code conversion to or from biphase space or mark coding, i.e. to or from codes where there is a transition at the beginning of every bit cell and a one has no second transition and a zero has a second transition one half of a bit period later or vice versa, e.g. double frequency code, FM code
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Dc Digital Transmission (AREA)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979076765U JPS6343625Y2 (ko) | 1979-06-06 | 1979-06-06 | |
| US06/155,783 US4342054A (en) | 1979-06-06 | 1980-06-02 | Information read device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979076765U JPS6343625Y2 (ko) | 1979-06-06 | 1979-06-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5646025U JPS5646025U (ko) | 1981-04-24 |
| JPS6343625Y2 true JPS6343625Y2 (ko) | 1988-11-14 |
Family
ID=13614684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1979076765U Expired JPS6343625Y2 (ko) | 1979-06-06 | 1979-06-06 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US4342054A (ko) |
| JP (1) | JPS6343625Y2 (ko) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4467374A (en) * | 1982-04-05 | 1984-08-21 | Hewlett Packard Company | Method and means for direct-current polarity restoration in magnetic recording |
| JPH01248301A (ja) * | 1988-03-30 | 1989-10-03 | Kyodo Printing Co Ltd | 磁気記録媒体およびそのセキュリティ情報の記録再生方法 |
| US8137210B2 (en) | 2001-12-05 | 2012-03-20 | Acushnet Company | Performance measurement system with quantum dots for object identification |
| US8872914B2 (en) | 2004-02-04 | 2014-10-28 | Acushnet Company | One camera stereo system |
| US8475289B2 (en) | 2004-06-07 | 2013-07-02 | Acushnet Company | Launch monitor |
| US8622845B2 (en) | 2004-06-07 | 2014-01-07 | Acushnet Company | Launch monitor |
| US8500568B2 (en) | 2004-06-07 | 2013-08-06 | Acushnet Company | Launch monitor |
| US7837572B2 (en) | 2004-06-07 | 2010-11-23 | Acushnet Company | Launch monitor |
| US8556267B2 (en) | 2004-06-07 | 2013-10-15 | Acushnet Company | Launch monitor |
| US7959517B2 (en) | 2004-08-31 | 2011-06-14 | Acushnet Company | Infrared sensing launch monitor |
| JP2021186455A (ja) * | 2020-06-03 | 2021-12-13 | パナソニック株式会社 | 脈拍検出装置及び脈拍検出方法 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53125705A (en) * | 1977-04-11 | 1978-11-02 | Ricoh Co Ltd | Transmission and reception system for pulse signal |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3581297A (en) * | 1967-09-18 | 1971-05-25 | Burroughs Corp | Binary data handling system |
| US3715738A (en) * | 1970-10-19 | 1973-02-06 | Peripheral Business Equipment | Data detection system |
| US3852809A (en) * | 1973-07-05 | 1974-12-03 | Ibm | Return to zero detection circuit for variable data rate scanning |
| US3947876A (en) * | 1975-01-06 | 1976-03-30 | C. J. Kennedy Company | Dual density 800 bpi NRZI and 1600 bpi PE read circuit for a digital magnetic tape transport |
-
1979
- 1979-06-06 JP JP1979076765U patent/JPS6343625Y2/ja not_active Expired
-
1980
- 1980-06-02 US US06/155,783 patent/US4342054A/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53125705A (en) * | 1977-04-11 | 1978-11-02 | Ricoh Co Ltd | Transmission and reception system for pulse signal |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5646025U (ko) | 1981-04-24 |
| US4342054A (en) | 1982-07-27 |
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